(19)
(11) EP 2 414 623 A2

(12)

(88) Date of publication A3:
09.12.2010

(43) Date of publication:
08.02.2012 Bulletin 2012/06

(21) Application number: 10758116.7

(22) Date of filing: 19.02.2010
(51) International Patent Classification (IPC): 
E21B 23/02(2006.01)
E21B 33/127(2006.01)
(86) International application number:
PCT/IB2010/000346
(87) International publication number:
WO 2010/112991 (07.10.2010 Gazette 2010/40)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(30) Priority: 31.03.2009 US 415297

(71) Applicants:
  • Schlumberger Technology B.V.
    2514 JG The Hague (NL)

    BG CZ DE DK GR HU IE IT LT NL NO PL RO SI SK TR 
  • Schlumberger Holdings Limited
    Tortola (VG)

    GB NL 
  • Services Petroliers Schlumberger (SPS)
    75007 Paris (FR)

    FR 
  • Prad Research And Development Limited
    Tortola (VG)

    AT BE CH CY EE ES FI HR IS LI LU LV MC MK MT PT SE SM 

(72) Inventors:
  • BAILEY, Louise
    Cambridgeshire PE19 6SD (GB)
  • VIDICK, Benoit
    50450 Kuala Lumpur (MY)
  • WAY, PAUL
    Cambridgeshire CB22 5HP (GB)
  • COOK, John
    Cambridge CB3 0LJ (GB)

(74) Representative: Ford, Michael Frederick 
Schlumberger Cambridge Research Limited High Cross Madingley Road
Cambridge CB3 0EL
Cambridge CB3 0EL (GB)

   


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